Drier



2 Sheets-Sheet 2.

(No Model.) W HARMON DRIER.

Patented Jan. 9, 1894.

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W/TNESSES:

THE NATIONAL LIY-DWFHING COMPANY.

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UNITED" STATES PATENT OFFICE.

WILLIAM HARMON, OF BARTOW, FLORIDA.

DRIERV.

SPECIFICATION forming part of Letters Patent No. 512,547, dated January9, 1894.

Application filed January '7, 1893. Serial No, 457,644. (No model.)

To'aZZ whom it may concern:

Be it known that 1, WILLIAM HARMON, of Bartow, in the county of Polk andState of Florida, have invented a new and Improved Drier, of which thefollowing is a full, clear, and exact description.

The object of the invention is to provide a new and improved drier,which is simple and durable in construction, very effective inoperation, arranged for continuous feeding and discharge of thematerial, and designed for use 1n drying grain, phosphate and othersubstances.

The invention consists principally of an exterior shell formed at itslower end with a conical bottom, and a concentric inner shell forming anannular space with the exterior shell and discharging at its lower endinto the said conical bottom, and an inverted coneshaped smoke flueleading from the heating chamber to carry off the smoke and gases, thesaid smoke flue being surrounded by a concentric shell, forming anadditional space for e the material and connected at its lower end bypipes with the conical bottom of the exterior shell.

The invention also consists of certain parts and details, andcombinations of the same, as will be hereinafter described and thenpointed out in the claims. I

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

, Figure 1 is a sectional side elevation of the improvement. Fig. 2 isa'sectional plan view of part of the same, on the line 22 of Fig. 1; andFig. 3 is a sectional plan view of the same on the line 3-3 of Fig. 1.

The improved drier is provided with an exterior shell A formed at itslower end with the cylindrical part A resting on a suitable foundationB. From the upper end of the cylindrical part A extends the cone-shapedpart A terminating at its small end in the cylindrical part A into whichthe material or article to be dried is discharged from a conveyor,elevator or other suitable machine. In the cylindrical lower end A ofthe shell is arranged an inverted cone-shaped bottom A over which passesthe finally dried material, through an outlet opening A arranged in thecenter of the said inverted cone-shaped bottom. Within the exteriorshell A is arranged a grate 0 extending about at a level with the upperend of the cylindrical part A, the said grate opening at its under sideinto an ash pit D made in the shape of a box and secured on ahorizontally-extending partition E supported from the shell A. The ashpit D is provided with suitable air inlet apertures D to conduct thenecessary air to the under side of the grate O to insure completecombustion of the fuel burning on the said grate.

The fuel is introduced onto the grate through a suitable feed door Farranged in one side of the shell A in the conical part A thereof, andthe ashes can be conveniently removed from the ash pit D through asuitable door G, also arranged in one side of the shell, but in thecylindrical part A. Within the conical part A of the exterior shell A isarranged an interior concentric shell H forming an annular space withthe said part A for the passage of part of the material to be dried. Thelower end of this annular space terminates in the horizontal partitionE, and

this lower end of the annular space can beclosed by a series ofsegmental trap doors I hinged at I to the shells A and H, one trap dooroverlapping the next following one at the pivot end thereof, as plainlyindicated in Fig. 3.

The free ends of the doors are adapted to be supported by pins 1 which,when withdrawn, permit the doors to swing downward so as to connect theannular space formed by theshell H and the shell part A with the lowercylindrical part A of the shell.

A suitable distance above the grate O and centrally in the shell A, isarranged a pipe 1 leading to the funnel-shaped end K of the invertedconeshaped smoke flue K, connected at its upper end with the smoke pipeL leading to the outside. The smoke flue K is surrounded by a concentricshell N forming with the said smoke flue, an annular space for thepassage of part of the material to be dried. The upper end of thisconcentric shell N connects with the upper end of the concentric "shellH so that a heating chamber is formed above the grate bars 0 within thespace inclosed by the shells H and N. The lower ends of the latterconnect by two cone-shaped pipes a smoke flue arranged inside the saidshells, a concentric shell around the said smoke flue, and connected atits upper end with the said first named concentric shell to form aheating chamber, pipes leading from the said second concentric shell tothe bottom part of the exterior shell, and a conveyer upon whichdischarges the outlet opening of the said bottom, to remove the driedmaterial, substantially as shown and described. i

6. A drier comprising an exterior shell having a discharge chamber inits bottom portion and a heating chamber above the same, an innerconcentric shell above said bottom chamber; the annular drying spacebetween the two shells being open at its upper end to chamber, a smokeflue within said shells and g a concentric shell around the said smokeflue connected at its upper end with the said inner concentric shell toform the said heating chamber, substantially as set forth.

WILLIAM H ARMON.

Witnesses:

W. S. ATKINS, A. B. FERGUSON.

' (no Model.)

PQG. HURLBUT.

BICYCLE STAND.

- .No.- 512,548. Patnted Jan. 9', 1894.

Fa 6 1 a WITNESSES. I INVENTOH I a I BY A TTORNE YS.

